204506603631 has 32 divisors (see below), whose sum is σ = 330546147840. Its totient is φ = 123931987200.

The previous prime is 204506603617. The next prime is 204506603641. The reversal of 204506603631 is 136306605402.

204506603631 is a `hidden beast` number, since 2 + 0 + 45 + 0 + 6 + 603 + 6 + 3 + 1 = 666.

It is not a de Polignac number, because 204506603631 - 2⁷ = 204506603503 is a prime.

It is a super-2 number, since 2×204506603631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204506603641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4109806 + ... + 4159268.

It is an arithmetic number, because the mean of its divisors is an integer number (10329567120).

Almost surely, 2^204506603631 is an apocalyptic number.

204506603631 is a deficient number, since it is larger than the sum of its proper divisors (126039544209).

204506603631 is a wasteful number, since it uses less digits than its factorization.

204506603631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63404 (or 63398 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 204506603631 in words is "two hundred four billion, five hundred six million, six hundred three thousand, six hundred thirty-one".